Develop an Amazon Product Importing Tool/App

In our business model, we use "Zonify" App to import products to our online store. Developer should test and try the Zonify App to guarantee the following features and functionalities (Most of it exists, and some to be developed) in order to fulfill our requirements (Or to develop a new Tool/App): 1. Keep and activate the “Override existing product” with the following options: a. Keep the ability to enter the product’s Shopify URL – As it is now in Zonify App. b. Keep the option for "Override Variants, Price & Images?" c. Keep the option for "Override Description, Title?" d. Keep the option for "Override Weight?" e. Keep the option for "Override SKU, ASIN, ISBN & Barcode?" 2. For standalone product (with no Variants), we need to be able to do all of the following: a. Ability to edit the "Title" and the "Description" of the Product. b. Ability to choose which image to add. c. Keep the “Pricing” section as it is now for the product. d. Ability for setting Pricing Rules for the Product with: i. Price Markup in %. ii. Compare Price Markup in %. iii. Price Cents Value. e. Under "Organization" : i. Keep the product "Type", "Tag", and 'weight" as editable lines. ii. With Zonify "Collection" dropdown menu (Check the App) to include all Collections in our Shopify store OR to be able to edit it as before. f. To add a section that acquires and shows the "Vendor" and “Available Stock” for the Product automatically, and editable to change if it is wrong. g. Under “Inventory” to Import the ASIN, ISBN, SKU and Barcode of each Product. 3. For Products with Variants, we need to be able to do all of the following: a. Ability to edit the "Title" and the "Description" of each Variant. b. Ability to choose which image to add to each Variant. c. Keep the “Pricing” section with the “Separate to Variants” option with auto acquire of Variant Pricing Rules list for each variant. d. Ability for setting Pricing Rules for each Variant with: i. Price Markup in %. ii. Compare Price Markup in %. iii. Price Cents Value. e. Under "Organization" : i. Keep the main product "Type" and "Tag" as editable lines. ii. With Zonify "Collection" dropdown menu (Check the App) to include all Collections in our Shopify store OR to be able to edit it as before. f. To add a section that acquires and shows the "Vendor" and “Available Stock” for each Variant automatically, and editable to change if it is wrong. g. Ability to Remove or Keep selected Variants. h. Under “Inventory” section to Import the ASIN, ISBN,SKU and Barcode of each Variant. We need this tool to work with other Marketplaces: 1. ebay. 2. Wallmart. 3. Other Amazon Marketplaces